struct drm_fb_helper_funcs — driver callbacks for the fbdev emulation library
struct drm_fb_helper_funcs {
void (* gamma_set) (struct drm_crtc *crtc, u16 red, u16 green,u16 blue, int regno);
void (* gamma_get) (struct drm_crtc *crtc, u16 *red, u16 *green,u16 *blue, int regno);
int (* fb_probe) (struct drm_fb_helper *helper,struct drm_fb_helper_surface_size *sizes);
bool (* initial_config) (struct drm_fb_helper *fb_helper,struct drm_fb_helper_crtc **crtcs,struct drm_display_mode **modes,struct drm_fb_offset *offsets,bool *enabled, int width, int height);
}; Set the given gamma lut register on the given crtc.
Read the given gamma lut register on the given crtc, used to save the current lut when force-restoring the fbdev for e.g. kdbg.
Driver callback to allocate and initialize the fbdev info structure. Furthermore it also needs to allocate the drm framebuffer used to back the fbdev.
Setup an initial fbdev display configuration